<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div {
            width: 150px;
            height: 150px;
            border: 1px solid red;
            padding-top: 50px;
            padding-left: 50px;
        }
    </style>
</head>
<body>
<div>内边距</div>
</body>
</html>